# CVE-2024-23531: Integer overflow in Avalanche

> Unauthenticated remote attackers can cause denial of service and potentially read memory via an integer overflow in Ivanti Avalanche.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Apr 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-v829-2px7-7w8w

## What is CVE-2024-23531?

CVE-2024-23531 is a high-severity vulnerability in Ivanti Avalanche, published on 19 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An Integer Overflow vulnerability in WLInfoRailService component of Ivanti Avalanche before 6.4.3 allows an unauthenticated remote attacker to perform denial of service attacks. In certain rare conditions this could also lead to reading content from memory.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2024-23531?

It affects 1 product.


Products: Ivanti Avalanche.

## How do I fix CVE-2024-23531?

No fix has been published for CVE-2024-23531 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-23531 being exploited?

There is no known exploitation of CVE-2024-23531 in the wild and no public exploit code.

## Other vulnerabilities in Ivanti Avalanche

- [CVE-2023-38036](https://insights.sbomify.com/CVE-2023-38036/): Memory corruption in Avalanche (critical 9.8)
- [CVE-2024-24996](https://insights.sbomify.com/CVE-2024-24996/): Memory corruption in Avalanche (critical 9.8)
- [CVE-2024-29204](https://insights.sbomify.com/CVE-2024-29204/): Memory corruption in Avalanche (critical 9.8)
- [CVE-2023-41727](https://insights.sbomify.com/CVE-2023-41727/): Memory corruption in Wavelink (critical 9.8)
- [CVE-2023-46216](https://insights.sbomify.com/CVE-2023-46216/): Memory corruption in Wavelink (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-23531 and fix it if it is affected.

What it is: CVE-2024-23531 is a high-severity vulnerability in Ivanti Avalanche, published on 19 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-23531 in the wild and no public exploit code.

Affected product: Ivanti Avalanche. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-23531/ (Markdown: https://insights.sbomify.com/CVE-2024-23531/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-23531
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-23531
- OSV: https://osv.dev/vulnerability/CVE-2024-23531

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-23531/
Summaries are generated and may contain mistakes; the official description above is the record.